Home / 20,079.12-27,708.01-11,126.09

Finding the Fourth Proportional to 20,079.12, 27,708.01 and 11,126.09

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Solution

The fourth proportional to 20,079.12, 27,708.01 and 11,126.09 is: 15,353.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.12 : 27,708.01 = 11,126.09 : x
  2. Step 2: Convert to fraction form
    20,079.12/27,708.01 = 11,126.09/x
  3. Step 3: Cross multiply
    20,079.12x = 27,708.01 × 11,126.09
  4. Step 4: Simplify right side
    20,079.12x = 308,281,812.98
  5. Step 5: Solve for x
    x = 308,281,812.98/20,079.12
  6. Step 6: Final answer
    x = 15,353.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.